Drier.



y0. S..SLEEPER.

DRIRE.

APPLIGATIONHLBD SEPTA, 1911. Y l 1,081,338 Patented nee. 16, 1913.

3 SHEETS-SHEET 1.

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`Pgtentd Dea-16, 1913.'

0. S. SLEMER.

* APPLwTIoN Hm) siam-1, 1911. 1,081,338-

wm. mm1 www 'STATES PATENT oEEioE.

.om-Ens, SLEEPER, or Burriana', NEW Yoan, assrenon To BUFFALO ronNnnY' c l` MACHINE COMPANY, F BUFFALO, NEW YORK, A Con-PoRAToN or NEW YORK.

DRIER.

To all 'whom it. may concern; "iiBeit known thatl-7 'Onrvnn' S. Swarm, a- .citizen of the United States, residing at liBiialo, in thecounty of Erie and 'State of New York, have' invented new and usefuly 'improvements in Driers,of which the folflowing' is a specification.l

,This inventiony relates' more particularly -1noisture is supplied to the underside of the to that class of driers which are' adapted to 1 0 .dry ordesiccate liquid substances byl denv positling the saine'in a thin iihnor sheet ona1-2surface which-is movable and from whic'hftilie material after being dried isv re-V moved .by a-scraper or doctor preparatory to l5 l mterial on the surface. vt has been/found Vn practice when drynig heavy liquidssuch as chestnut extract,

Z0' streakyu., or nneven condition which interferes with. uniform dryingot' theI same.

f 1 It is 'the object of this invention to rprovidefmean's for' leveling orevenly distributl ing the liquid or wet material over theheat- 2.5 ingsurface or drylng member for insuring evendrying' of the same, which means are.. cinnparatively simple and easy rof adgustment and'capable of being applied not only to 4machines vwhile in v course of construction but also to' machines which are already in use.

'In the accompanying drawingsv consistbingof 3. sheets; Figure l. is a vertical trans- .yer"s 'e section of a vacuum drier embodying my ,improvemente Figa-f 2 1s, a horizontal section, 'ona reduced scale, 1n line Q'--2, Fig.

Figi-'dis a Itragmentary vertical transV verse section, on an enlarged' scale, of, the.

distributing mechanism and' associated d, Fig d is a Afragmentary vert-icallongitudinal section in line 4 4, Fig. 3.-

Similar characters of reference indicate corresponding parts throughout the several adapted to he 4connected with an erha ustingA device of any. Vsuitable construction; The

lower part of the f drying cham-ber is com structed Atoforrn a catch basin-or reservoir 3' and a'condensate receiving chamber or de-A "receiving a` `new deposit, of wet' or undriedV that the saine tends to bubble and assume. a

zend -14 of. the pan at which point the surplus the supply pipe 12 so that it is again'presented t'o the drying' s urfaceof the drum.

-liverypr discharge spout. 4'. thedried re# siduiun or condensate of tle liquid is scraped specification of Letters raient. Patented Dec, 16,1913, Application filed September 1,1911. Serial No. 647,189.

livery spout 4f which reservoir and spout are separated' by an upright wall or partition 5. Within. the upper part of the drying chamber is arranged acylindrical drum 6 whi 1 rotates about a horizontalaxis and is heatil by admittii'lg to the interior thereof steaml or other suitable heating agent.

The liquid which is to be deprived of its drum by means of apan 'whi'ch holds 65 .this liquid iu the form of a strealnso that as the drum rotates `in the direc-tion of the arrow, Figi, the-'same will dip with'its underside into'the stream of liquid andcause af'lm thereof to'adhere to the surface of the drum. This pan is mounted by vmeans of arms 8 on a horizontal longitudinal shaft 9 ywhich 1s Journaled upon the stationary end walls 10 of the dryingl chamber so as to permit the pan to be swung upwardly into.

operative relation to the `drum or to be swung downwardly awa-y from the drum so vthat the pan' is accessible for cleaning, inspection and repairs. The liquid t be dried is supplied to the `pan by means W ich comprise 'a horizontal longitudinal A manifold' pipe .114 arranged below the'pan and com: nected with a main supply pipe 12 and prov vided with a. plurality of branch ,pipes or nipples 13 which project upwardly through 85 the-pan.' The liquid entering through the main supply pipe passes through the mani- 'fold pipe, and branch pipes into the pan and'then tlows in a stream towardthe front liquid drops from. the pan into the reservoir 3. -Frox'n'the latter the liquid isagain withdrawn by means of a pipe -15 and delivered bya 'pump of anysu'itahle construction into.

By this means the liquidis kept `in .constant circulation-'while the machine is in operation'. v

The film ofliquid adhering to the outer surface of the drumis dried while being carried from. the pan forwardly 4and. over the top 'of -the drumand when it reaches the deJj 165 off from 'the periphery of the drum uddi rectedinto the discharge spout by meansiof' 1a knife. scraperor doctor 1d .which is mounts* ed onthe partition 5.

Inorder to auseltheliquid to be leveled evenly over .the entire surface or'periphery feeding-device the same is operated upon by of the drying orhcatingdrum afterit is deposited upon v the .latter .by the pan or the distributing or leveling device which forms the subject of this inventionA andv which is preferably constructedA as' follows: 17 represents a longitudinal leveling distriby A- uting blade or bar which is arranged lengthwise 'adjacent to the periphery or'drying 'surface of the drum' in front of the feed'pan 'and which is provided withlmeans whereby Vthe position'of the upper longitudinal edge of this blade or bar may'be heldv at theproper distance relative to the periphery of the drum to suit the character of the partida'- lar materialv which 'is' beingdried.' .'As the film or layer of wet material which has beenI deposited by the pan u on the drum passes the upper edge of the distributing blade, the

latter removes vor 4holds -baclrl all the high places or parts of the liquid to -be dried which exceed in thickness the space between the edge of thefblade and the drum, this'Y excess being-spread over the following parts ofthe surface of the drum and distributed evenly over the samev andcausing the low places to be filled By this. means any;

streaky formation or unevenness in the mwaterial to be dried'due to iyrregular'deposit'on the drum or the presence 'of bubbles vin the liquid is eliminated, wherebya coating of even and uniform thickness of the material to be dried'is formed on the drum andthe same is caused to be'dried evenly and uniformly. upon'passing with the drum from' the supply pan over the 4top of the drumjto the doctor. It is therefore possible to produce af product of uniform -xquality -when drying materials which tendto form bubbles or-streaks when deposited onthe drum, as

' for" instance, whendrying chestnut extract for tanners` use, or othenmaterlals having A 'siinilar characteristics. 45

mounted and adjusted by avariety of means.

As shown inthe drawings this blade issuplade. towardand from the periphery o f--the l *drying drum is effected by means which comprise aplurality of horizontalfadjusb ingrods 19 each'ofwhichis arranged trans-'- versely' and pivotallyl connected `at itsy inner l en dwith the distributing bar f while its outer Vend, is externally' s'c'iew threaded and passes throughan-internally screw threaded sleeve 2Q mounted j onQ-,the- -adj acent longitudinal wall 21 ofthejdrying chamber.' )Upon-.turnl ngthe adjusting/rods *in-'one directionor, fthe other the Same will move either inwardly Lor otwardlyrelatively to the drum :owing to thescrewfconneotions of the same withf ported by a` plurality Iof depending rock arms 18 which are mounted. upon the same shaft `9 whichcarries-the armsofthefeed an.` The. adjustment"- of the distributing Theleveling or distributing blade-may' be.'

-th'e adjusting sleeves 20, therebydpermittin so as to be spaced apart'from' the periphery of the drum the proper distanceto -Suit the particular material under treatment.

' The pivotalv connection between-'each adjusting rod which is shown in the drawings and which is preferred comprises a. socket 22 'formed in the u-pp'er side ofyal'lug 23 ar jhaving a conical-'bottom 24and an upright .slot at its sideiQ., :a'ball' engagngvits underside with the bottom of"th e=socket, a reduced' neck`27. arranged 4in the 'vertical slot and connecting the" ball with 'the innerend .of theadjust'ingrod, andfaclamping screw ofthe socket and bearingfa'gainst' the 'upper side ofthe ball. This means of connecting eachj adjusting rod with the distributing bladepermits of fr ee movement of the blade and rod relatively vto eachother an'd at the same time-"avoids anylost motionor play, -Sojthat after the. blade is adjusted itwill be held firmly and reliably in position relatively to the heating drum and insureauniform spreading. of the over-fthe drum. Each of the adjusting sleeves' projects through-anopenin 29"in the adjacent. side wall- 21 of the drying'chamber and isheld inl position 'by means of a; ilangevBO' at its outer end which 'is secured tothe outer side of the wall. 21 and a. screw nut 31 appliedto the externally threadedjinner end of this v.this wall;

` ably effected by means -of a' handle or wheel 32' applied tothe. outer'endiof -the adjusting rod, as shown. in'Fi .3, 'althou h, any other suitablemeans may y' Iprovided. j

Leakage through"thejoint betweeneach Ypreve'ntedby providing theouter'end of the vadjusting sleeve with 'a st'uing box 33 j I claim as .myQinvention-i 1. A drier compris' l Y drum, 'means for-depositing the material to ranged adjacent tothe surface o.

dried evenly lover the surfaceof the drum,

5mg-*rod `pivotallylconnect`ed with said blade thread-which receives' an external thread said' rod.';

.drum means for -de positinlg' the materiffb The drxe'd von said drum, la. leveling- 'blade auf .adjacent to the surface of thev dru'n ranged on vthe `outersidc-of the blade and V- adjusting rodi and-fits. adjusting sleeve is a. rotatable heating and means f-.fori adjusting said 'blade tively tor said drumA comprising an v'adjust-A 'and .a'stationary Sleeve h'aving'an internal the' distributing bar .or biadefto be shifted 28 -engaging with theupper `threaded part material to be dried sleevefLand bearing against the inner side of Tnrning of each adjusting rod is prefe'r- A Athroinglr which -theadjacent partof the adj justing rod passes.

rb'efdried on said drum, a leveling blade ar' *hef-'da and adapted Ito. spread the material 'to be.

*2. VA drier comprisingarotatble 'iso and adapted to spread the material tobe dried evenly over the surface of the drum,A

and means for adjusting4 said blade relatively to said drum comprisingan adjustin rod, a ball connected by a reduced nec with lsaid rod, a lugar-ranged on said blade and providedwith a socket havin a conical bottom which is engaged by one side of said f ball and a slot at its slde which receives said neck, and a screw engaging with an internal thread in the outer part of the socket andv bearing against the other side of the ball. e

3. A drier comprising a rotatable heating drum, means for depositing'the material to .be dried on said drum, a le'velin blade arranged adjacent to the surface o the drum and adapted i-to spread the material to be dried evenly over'the surface of the drum, and means for adjusting said blade relatively to the drum comprisingan adjusting rod connected with said blade and provided with la handle and an external thread, an internally threaded sleeve which receives the threaded .part of the rodand which has i a flange adaptedto be secured to one side of a support, and a screw nut arranged on said sleeve and bearing against the'o'ther side of said support.`

4. Y. A drier comprising a rotatable heating drum, means for depositing the material to be dried on said drum,.a levelin blade arranged adjacent to the surface o -the drum 'and adapted to spread the material to be dried evenly over the surface of the drum, and means oradjusting said blade relatively to the drum comprising an adjustne rod connected with said blade .and provi with a handle andan external thread, an internally threaded sleeve ,which receives the threaded part of the rod and which has a flange adapted to be secured toone side of a support, a screw nut arranged on said sleeve and bearing against the other side of said support and a; stuliing boxarranged on v said sleeve and surrounding said rod., 

